I recently added the package whereandwhen to my AREDN node and connected a GPS antenna to it. It pulls the position, time, and date just fine. I added the ntp service to the list of advertised services. I have a Grandstream 2160 VOIP phone that will not get correct date/time from AREDN node NTP server. I have successfully retrieved time/date info from us.pool.ntp.org with the phone while connected to the WAN, so I know that it is capable of retrieving and applying it. I've also set up DHCP option #42 on the AREDN node and populated it with the IP value of the AREDN node. I have set both the primary and secondary ntp_server IP addresses in the phone to the IP of the AREDN node and also checked the box allowing the DHCP option #42 to override the primary and secondary ntp server addresses. I've also tried about every known combination of these settings to get it to pull date/time info from the AREDN node while disconnected from the WAN. I've searched the relvant forums here, but did not find any similar issue. I have also read through the Node Admin Guide as well as the Grandstream DHCP Options Guide and the Grandstream GXP2160 Administration Guide. With all of that said, I'm at a loss for why this isn't working. Am I correct in thinking that a VOIP phone should be able to pull time/date info from an AREDN node using GPS for location/time/date information from the GPS antenna if it is set up as a NTP server? I'm including relevant screen images in a Word document attachment for reference.
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